Move ANSIRenderer into a separate package

ansi/image.go

@@ -0,0 +1,38 @@
+package ansi
+
+import (
+	"io"
+)
+
+type ImageElement struct {
+	Text    string
+	BaseURL string
+	URL     string
+	Child   ElementRenderer // FIXME
+}
+
+func (e *ImageElement) Render(w io.Writer, ctx RenderContext) error {
+	if len(e.Text) > 0 {
+		el := &BaseElement{
+			Token: e.Text,
+			Style: ctx.options.Styles.ImageText,
+		}
+		err := el.Render(w, ctx)
+		if err != nil {
+			return err
+		}
+	}
+	if len(e.URL) > 0 {
+		el := &BaseElement{
+			Token:  resolveRelativeURL(e.BaseURL, e.URL),
+			Prefix: " ",
+			Style:  ctx.options.Styles.Image,
+		}
+		err := el.Render(w, ctx)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}